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यदि a + b + c = 0 है, तो a3 + b3 + c3 बराबर है : - Mathematics (गणित)

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Question

यदि a + b + c = 0 है, तो a3 + b3 + c3 बराबर है :

Options

  • 0

  • abc

  • 3abc

  • 2abc

MCQ

Solution

2abc

स्पष्टीकरण -

हम जानते हैं कि,

a3 + b3 + c3 – 3abc = (a + b + c)(a2 + b2 + c2 – ab – bc – ca)

चूंकि a + b + c = 0, इसलिए a3 + b3 + c3 – 3abc = (0)(a2 + b2 + c2 – ab – bc – ca) = 0

अत:, a3 + b3 + c3 = 3abc

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बहुपद
  Is there an error in this question or solution?
Chapter 2: बहुपद - प्रश्नावली 2.1 [Page 16]

APPEARS IN

NCERT Exemplar Mathematics [Hindi] Class 9
Chapter 2 बहुपद
प्रश्नावली 2.1 | Q 21. | Page 16
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